Controlling apparatus for hoisting-engines.



C. R. WELGH. CONTROLLING APPARATUS FOR HOISTING ENGINES. APPLICATION FILED MAY 1, 1912.

Patented Aug. 18, 1914.

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m/WW9 HIE MORRIS IFTERS C0..Pn0rou7l1m. WASHINGTON, n c.

G. R. WBLCH.

GONTROLLING APPARATUS FOR HOISTING ENGINES. APPLICATION FILED MAY 1, 1912.

1, 1 08,044. I Patented Aug. 18, 1914.

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c. R. WBLGH. CONTROLLING APPARATUS FOR HOISTING' ENGINES. APPLICATION FILED MAY 1, 1912.

1 1 08,044, Patented Aug. 18, 1914.

3 SH EETSSHEET 3.

wventoz THE AORRIS PETERS CO. PHOTO-LITHQ, WASHINGTON. D. C.

[prior Patent, No. 965779,

UNITED STATES PATENT OFFICE.

CLARENCE R. WELGI-I,'OF SCRAN'TON, PENNSYLVANIA.

CONTROLLING APPARATUS FOR I-IOISTING-E'NGINES. I I

Specification of Letters Patent.

Application filed May 1, 1912. Serial No. 694,564. 7

To all whom it may concern I Be it known that I, CLARENCE R. W'nLoH, a citizen of the United States, residing at Scranton, in the county of Lackawanna and State of Pennsylvania, have invented new and useful Improvements in Controlling Apparatus for Hoisting-Engines, of which the following is a specification. I This invention has reference to controlling apparatus for hoisting engines, and; more especially to controlling apparatus of mal position; Fig. 2 is a similar view, with the parts in tripped position; Figs. 3 and 4 are, respectively, a horizontal section on the line-3-3, and a vertical section on the line 44 of Fig. 2; and Fig. 5 is a fragmental perspective view of the trip device and its 1 operating mechanism.

In said drawings, A indicates, in a general manner, the engine controller, 13 the I governor, C the trip, and-D the trip-operat I ing mechanism.

The controller-A consists, in the present instance, of a cylinder 1 in which is movable a piston 2 whose stem is connected to the brake-operatinglever 3, the movement of the piston requisite to set the brakes be ing efiected either by themanual actuation of .said lever or by the entrance of a motive fluid through the pipe line 4 into cylinder '1. The passage of the fluid through the pipe line 4 is regulated by means of a throttle valve 5 located in that section of said line which is directly adjacent the trip and its operating mechanism. Upon this section there is mounted an upstanding arm 6 to whose upper end is pivoted the forked end of a bar 7 which, intermediate its ends, carries a threaded pin 8, or the like, designed to engage and 'depres the stem of valve 5,

. when bar 7 is depressed, so as to close said PatentedAug. is, 1914.

valve. The valve may be equipped with .a

suitable controlling spring, (not shown), by means whereof it is normally held in raised or open position.

The valve operating bar 7 is held in de pressed position by the trip C, which latter,

in theconstruction illustrated, comprises a, rocking upstanding arm 9 pivoted at its lower end toa collar 10 mounted on the pipe line at the opposite side of valve 5 from arm 6. --The upper end of the trip arm is provided with a laterally projecting finger 11 which is designed to engage the outer end of bar 7, said bar being provided, in turn, at the point indicated, with, a finger or shoulder 12 that extends toward thev trip and is, or may be, produced by cutting away a portion of the bar, as shown-in Fig. 5.

To operate the trip, the mechanismD is provided, this mechanism including primary and secondary actuating members 13 and 14, and 15 and 16, respectively, a traveling member 17 i for co-action with said actuating members, and a pair of shaftsl8 and 19 whereon all of said members are mounted. Said shafts are disposed horizontally and supported in spaced parallel relation in the end pieces of a frame 20 which is supported, in turn, upon an upright 21 that is located beneath and directly adjacent the controlling valve and the trip.

Shaft 19 is threaded, as shown,'and carries the traveling member 17, here depicted as in the form of a sleeve nut; .it is driven from the main shaft 23 of, the engine through the agency of intermeshing gears 24 ancl'25, or in any other suitable manner, and is. operatively connected with the gov ernor B, whose shaft 26 carries a gear 27 in meshwith gear 25 and is, itself, journaled in a bracket 28 projecting upwardly from and secured to frame 20. .The gears 24, 25 and 27 hear such a predetermined ratio to each other, and the length of shaft 19 is so proportioned that the time consumed by the travel of nut 17 from one end of the threadhereinafter .set forth, these, movements be ing caused by'the'co-action of nut 17 with any one ofpthem'embers 13 and 14, or 15 Shaft.

and 16, and the actuation of the governor. The two primary members 18 and 1 1- are preferably constituted by collars which are provided with noses 29 and 30 that extend transversely of the frame toward and beneath shaft 19 and below the path of move ment of nut 17, while the secondary members 15 and 16 are formed by similar collars whose noses 31 and 32 project, however, directly toward said shaft into the path of movement of said nut. The several collars are adjustablelongitudinally of shaft 18 and are lield in adjusted positionthereon by means of set-screws 33 Or other suitable retaining devices. The aforementioned arrangement is such, thereto-re, as to insure an end wise movement of shaft 18 when nut 17 strikes against any one of the said collars,

but, under normal conditions, said nut will contact only with the secondary collars the secondary collars, which occurs shortly beiorethe cage reaches one end or the other oii the elevatorsha'ft.

In order to produce the rocking move ment of shaft 18 requisite to bring the noses on the primary collars into operative position, a connection between said. shaft and the goveijno ris provided, whereby the actiiatitih "of the latter will automatically effect such movement. To this-end,\there is included in or operatively associated with the of "the governor 1s journaled. The longhor1zontal arm o't said lever carries an adjustable weight 37 and is connected at its free end by a link 38 to a crank arm 89 securedto the ad acent end oi shaft 18, while theshort vertical arm oiithe lever hasa loose pivotal connection at its free end'with a sleeve 41-0 secured to the ad jacent end of an ,endwise niovable rod "-il-1. slidably fitted in stem 36, the rear end o't' said. rod terminating in ahead 42 that hears againstthe in turned arms of the governor levers 43. In consequence, when the speed at wjllltllltlle engine is running becomes excessive, theoutwar'd movement of the governor levers will occasion an outward end- Wi'se-movement of rod 41, (toward the left, with respect toFig. 1), which will produce, in turn, an upward rocking movement oi" lever 34, \vitlrthe' result that'link 38 will be pulled upwardly and thereby'rock shaft 18- ;aotuating means carried by erating elementmove said elem ent endwisei in the desired manner, by reason of its connection with crank 39. Collars 13 and 152 will be rocked with said shaft, as is apparent, and their noses thusbrought into position to be struck by nut 17 according to the direction in which the latter is moving. To prevent said nut from rotating with shaft 19, it is provided with a rear-wart ly-extending key at which projects into a longitudinal groove 45 formed in the inner face of the rear piece or mom er of frame 20.

The endwise movements of shaft 18 are transmitted to thetrip, in order to operate the same by means of a grooved collar 46 which is suitably fastened to said shaft, the

groove therein receiving the free end of a rearwardlye:;tending pin t? secured to arm 9. in consequence, when nut l? strikes against the nose of any one of the c liars 13, 14;, 15 or 1.6, onshatt't 18, said shaft will be shifted in one direction or the other, "and its grooved collar the trip arm in the same direction releasing finger 11 from the shoulder bar 7, whereupon valve will be free t open automatically under the-influence of its controlling spring.

Theinvcntion, and its mode of operation asa whole, are believed to be apparent from the foregoin and to require no further dc scription.

. l. claim-as my invention: I I

1. Th :urengine controllingapparatus, the combination of a trip; a movable element permanently connected with said trip for operating the same primary and secondary said element; and a lTi'ElflillQl arranged tofengage'either 'd primary or said secondary actuating lineans under predetermined conditions, to

in ov 0 ea i d elem ent.

In an engine controlling apparatus, the combination of a trip'gja in v'ahle optherefor, normally 'ino 'ierative primary actuating means and nor nially o erative secondary actuating means carried by said element; means "i orinovingl, said element in one direction, to bring said primary actuating means into operative-position; and a me either said prim or said secondary *me element endwise.

in an engine controlling apparatus, tl ccanbination of a trip; a moraliile operating element therefor; normally inoperativeprimary actuating means and normally operative secondaryactuating means carried by said element; means for rocking said element about its longitudinal. axis, to bring said primary actuating means into operative position; and a meniher arranged to ougage either said primary or said secondary means under predetermined conditions, to

will rock predetermined conditions, to move )er arranged to engage i. In an engine controlling apparatus, the combination of a trip; a movable operating element therefor; normally inoperative primary actuating means and normally operative secondary actuating means carried by said element; governor-controlled means for rocking said element to bring said primary actuating member into operative position; and a member arranged to engage either-said primary or said secondary actuating means under predetermined conditions, to move said element.

5. In an engine controlling apparatus, the combination of a trip; an endwiseshiftable element connected therewith; a traveling member movable with relation to said element; a collar carried by said element and provided with a nose adapted for move ment into and out of position in the path of said member, said member being adapted to engage said nose when the latter occupies the firstnamed position; means for rock ing said element, to bring said nose into such position; and means for operating said member.

(3. in an engine controlling apparatus, the eanbination of a trip; an endwise shiftable element associated with said trip for operating the same; a traveling member movable with relation to said element;'a collar carried by said element and provided with a nose adapted for movement into and out of position in the path of said member, said member being adapted to strike said nose when the latter occupies the first-named position to shift said element endwise and actuate said trip; govei'norcontrolled means connected with said element for rocking the same in one direction, to bring said nose into such position; and means for operating said member.

7. ln an engine controlling apparatus, the con'rbinat-ion of a trip; an endwise shiftable clement associated with said trip for operating the same; a traveling member movable with relation to said element; a pair of collars carried by said element and pro aided, each, with a nose against either of which said member is adapted to strike :nder predetermined conditions during its movement. to shift said element endwise and operate said trip, the nose on one collar being normally disposed out of and the nose on the other collar normally in the path of m vemont of said member; means for rocking said element to bring the nose on the first-named collar into said path; and means for operating said member.

8. in an engine controlling apparatus, the combination of a trip; a pair of parallel mist-named shaft during the rotation thereof; ano primary and secondary actuating men secured to the second-named shaft, .rer said actuating means being adapted to be strncl; by said collar under predetermined conditions, to shift said secondnamed shaft endwise and operate said trip,

in an engine cont-rolling apparatus, the ,ombination of a trip; a pair of parallel s1 aft-s, one of which is threaded; a member secured to the other shaft and connected directly to said trip; means for rotating the fi -namcd shaft; a collar traveling on said firs named shaft during the rotation thereof; normally inoperative primary actuating means and i'rormally operative secondary actuating means secured to the secondnamed shaft; andmeans for rocking said second-named shaft, to bring the primary actuating means into operative position, either of said actuating means being adapted to be struck by said collar under predetermined conditions, to shift said secondnamed shaft endwise and operate said trip.

10. in an engine controlling apparatus,

the combination of a trip en'ibodying a rocln g arm provided with a pin, and a cooperative part adapted to be engaged and released by said arm; an endwise-movable trip-operating element provided with a collar having a circumferential groove wherein said pin is engaged, for rocking said arm, to release said part, when said element is moved endwise; and means for moving said element endwise.

11. in an engine controlling apparatus, the combination of a tripembodying a rockarm provided with a pin and a part cooperative with said arm; a movable ele ment for operating said trip providedwith a collar having a circumferential groove wherein said pin is engaged; a normally inoperative actuating member carried by said element; means for rocking said element about longitudinal axis, to bring said actuating member into operative position; and a member adapted to engage said ac tuating member for moving said element cndwise.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses,

CLARENCE R, WELCH. lVitnesses d Jonoaron, L. A. Mor is n.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

- Washington, D. C. 

